From mboxrd@z Thu Jan 1 00:00:00 1970 From: Holger Brunck Subject: Re: cgroups and SCHED_IDLE Date: Mon, 29 Jul 2013 17:54:03 +0200 Message-ID: <51F6901B.4070308@keymile.com> References: <51CC7392.8080701@keymile.com> <51D139B4.8070407@keymile.com> <20130723155634.GD18458@mtj.dyndns.org> <51F65F3D.1080503@keymile.com> <20130729140723.GB22156@laptop.programming.kicks-ass.net> <51F686E7.6020200@keymile.com> <20130729152529.GD22156@laptop.programming.kicks-ass.net> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20130729152529.GD22156-RM5+C6weyIYnLiPH7yDmwOa11wxjtiyuLtmvbW2Dspo@public.gmane.org> Sender: cgroups-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Peter Zijlstra Cc: Tejun Heo , mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, "Germs, Frits (extern)" , cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org On 07/29/2013 05:25 PM, Peter Zijlstra wrote: > On Mon, Jul 29, 2013 at 05:14:47PM +0200, Holger Brunck wrote: >> no, unfortunately I got the same results as before. > > OK, so I'm a little confused; this works on SMP but not on UP? There's yes this is what I see in my setup. > lots of mention of various platforms, but since I simply don't know any > of them its not clear if they're UP or not. > as I said I have two different boards with different UPs: arch cpu 32/64 bit kernel ARM kirkwood 32 3.10 (but 3.0 shows same problems) powerpc MPC8247 32 3.10 (but 3.0 shows same problems) both shows this strange behaviour. and I have a SMP host PC (Intel(R) Core(TM)2 Quad CPU) running a 3.4 kernel where I am unable to reproduce the problem even if I start the kernel with maxcpus=0. Maybe I could tomorrow have a look on another board of us which is a ppc Quadcore. I guess this could help to increase the confusion? ;-) Regards Holger